[    2.519330] ip (274) used greatest stack depth: 12360 bytes left
[    2.649049] ip (283) used greatest stack depth: 12344 bytes left
[   57.366599] netem: version 1.3
[  530.938974] ip (9960) used greatest stack depth: 12192 bytes left
[  545.619618] ip (10837) used greatest stack depth: 12160 bytes left